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. 2019 Aug 28;9:12482. doi: 10.1038/s41598-019-48981-w

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Emitter optimization of 10 μm-thick inverted pyramid PhC IBC cell with N_p0 = 5 × 10¹⁸ cm⁻³, σ_p = 100 nm. Table 2 contains the details of the contact geometry and other simulation parameters. Here, the Gaussian doping profiles are of the form $N_{i 0} \exp (- z^{2} / 2 σ_{i}^{2})$ for i = n, p. The cell yields a power conversion efficiency of 30.74% at N_n0 = 2 × 10¹⁸ cm⁻³ and σ_n = 220 nm.